Born on December 10, 1954, Christopher Disney Miller is Walt & Lilian Disney's first grandchild. Miller has worked as an assistant director and second unit director on several films, including The Black Hole and Herbie Goes Bananas.

Christopher D. Miller's mother is Diane Disney Miller, Walt & Lilian Disney's only biological daughter. She was key to the construction of the Walt Disney Concert Hall in Los Angeles and the Walt Disney Family Museum in San Francisco's Presidio. His father is Ronald Miller. While playing football at USC, Miller met Diane Disney on a blind date. Ron Miller is also a former President & CEO of Walt Disney Company.